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5 Written questions

5 Matching questions

  1. cholesterol
  2. gene
  3. condensation reaction
  4. monosaccharide
  5. monomer
  1. a A reaction in which two molecules become covalently bonded to each other through the loss of a small molecule, usually water; also called dehydration reaction
  2. b A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses)
  3. c The subunit that serves as the building block of a polymer
  4. d The simplest carbohydrate, active alone or serving as a monomer for disaccharides and polysaccharides. Also known as simple sugars, the molecular formulas of monosaccharides are generally some multiple of CH20
  5. e A steroid that forms an essential component of animal cell membranes and acts as a precursor molecule for the synthesis of other biologically important steroids

5 Multiple choice questions

  1. One form of the secondary structure of proteins in which the polypeptide chain folds back and forth, or where two regions of the chain lie parallel to each other and are held together by hydrogen bonds
  2. a long carbon chain carboxylic acid. fatty acids vary in length and in the number and location of double bonds; three fatty acids linked to a glycerol molecule form fat
  3. The sugar component of RNA
  4. A storage polysaccharide in plants consisting entirely of glucose
  5. A long molecule consisting of many similar or identical monomers linked together

5 True/False questions

  1. lipidA structural polysaccharide of an amino sugar found in many fungi and in the exoskeletons of all arthropods

          

  2. hydrolysisA long molecule consisting of many similar or identical monomers linked together

          

  3. polypeptideThe building block of a nucleic acid, consisting of a five-carbon sugar covalently bonded to a nitrogenous bas and a phosphate group

          

  4. peptide bondthe covalent bond between two amino acid units, formed by condensation synthesis

          

  5. purineA type of nucleic acid consisting of nucleotide monomers with a ribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and uracil (U); usually single-stranded; functions in protein synthesis and as the genome of some viruses

          

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